12495444768 has 36 divisors (see below), whose sum is σ = 35533921878. Its totient is φ = 4165148160.

The previous prime is 12495444763. The next prime is 12495444779. The reversal of 12495444768 is 86744459421.

12495444768 is a `hidden beast` number, since 1 + 24 + 9 + 544 + 4 + 76 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11588953104 + 906491664 = 107652^2 + 30108^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12495444768² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12495444763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21693193 + ... + 21693768.

Almost surely, 2^12495444768 is an apocalyptic number.

12495444768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12495444768 is an abundant number, since it is smaller than the sum of its proper divisors (23038477110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12495444768 is a wasteful number, since it uses less digits than its factorization.

12495444768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43386977 (or 43386966 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 12495444768 in words is "twelve billion, four hundred ninety-five million, four hundred forty-four thousand, seven hundred sixty-eight".